| Model | Sum of Squares | df | Mean Square | F | Sig. | |
| 1 | Regression | 1.847 | 4 | 0.462 | 2.043 | 0.092b |
| Residual | 28.699 | 127 | 0.226 |
|
| |
| Total | 30.545 | 131 |
|
|
| |
| 2 | Regression | 5.703 | 8 | 0.713 | 3.529 | 0.001c |
| Residual | 24.843 | 123 | 0.202 |
|
| |
| Total | 30.545 | 131 |
|
|
| |
| 3 | Regression | 6.406 | 13 | 0.493 | 2.409 | 0.006d |
| Residual | 24.139 | 118 | 0.205 |
|
| |
| Total | 30.545 | 131 |
|
|
| |
| 4 | Regression | 11.545 | 18 | 0.641 | 3.814 | 0.000e |
| Residual | 19.000 | 113 | 0.168 |
|
| |
| Total | 30.545 | 131 |
|
|
| |
| 5 | Regression | 14.237 | 23 | 0.619 | 4.099 | 0.000f |
| Residual | 16.308 | 108 | 0.151 |
|
| |
| Total | 30.545 | 131 |
|
|
| |